
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X900-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 900mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ200X900-20-S is a double-acting, double-rod ISO 15552 profile cylinder engineered for heavy-duty applications. An integrated rear adjusting screw provides a 20mm trim range, creating a usable travel window of 880-900mm. This allows operators to dial in exact end positions during commissioning without adding external stops.
Fitted with a carbon steel rod and PT tapered ports, this variant includes a magnet for position sensing. It supports AirTAC CMSE reed and DMSE electronic switches via the dual sensor grooves on the extruded aluminum barrel. The variable air cushions at both ends absorb kinetic energy, but this cylinder does not hold loads without live air pressure—use a SAIL or BSAI model for fail-safe locking.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X900-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 900 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×900 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Fine-tune the 880-900mm stroke end-position during machine setup to ensure precise pressing force on large industrial components without external spacers.
Adjust the stroke on the fly to accommodate varying pallet sizes on a heavy-material conveyor line, using the 20mm trim to set the exact retract position.
The 20mm rear adjuster is chosen over a fixed-stroke SAI cylinder when you need variable end-stops to accommodate slightly different product sizes on the same line.
Because the 900mm stroke is non-standard and exceeds the typical maximum, it is manufactured to order. The extended travel on this 40mm rod necessitates an external guide to prevent excessive side-loading and premature seal wear. For a direct ISO 15552 replacement, match the 200mm bore, 900mm stroke, 20mm adjustment, PT G3/4 ports, and the -S magnet requirement. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
It can reach a maximum of 3204 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that trims the nominal 900mm stroke back by up to 20mm, giving an effective travel window of 880-900mm. It only sets the end position and does not lock the load without live air pressure.
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